新生儿坏死性肠炎(Neonatal Necroti-zing Enterocolitis 以下简称NEC)是主要发生于低出生体重儿的一种危重疾病,其特征为弥漫性或斑块状肠坏死并存败血症、继发性腹膜炎、肠穿孔而致死亡。病理表现为肠道出血、坏死及肠囊样积气。发病率占出生总数的0.04～1.05%。病因:目前尚不完全清楚,多数认为是多种因素所形成。一、肠道缺血Lloyd 报告胎儿、新生儿在休克、低氧血症等时处于窘迫状态,机体产生潜水反应(Diving Reflex),使血液重新分布,首先分布心、脑,以维持生命功能,因 Neonatal Necroti-zing Enterocolitis (NEC) is a critically ill disease mainly occurring in low birth weight infants and is characterized by diffuse or plaque necrosis with sepsis, secondary peritonitis, intestinal perforation And cause death. Pathological manifestations of intestinal bleeding, necrosis and intestinal cystoid gas. The incidence accounted for 0.04 to 1.05% of the total number of births. Etiology: It is not yet fully understood, most think is the formation of a variety of factors. First, intestinal ischemia Lloyd report fetus, newborn in shock, hypoxemia, etc. in a distress state, the body produces diving reaction (Diving Reflex), the redistribution of blood, the first distribution of the heart and brain, in order to maintain the function of life, because